Tree-felling saw



A. ZAIAUSKIS.

I i TREE FELLING SAW.

APPLICATION FILED MAY-I4, ISZI- Patented Apr. 25, 1922 2 SHEETS-SHEET I.

ll- VIII-l IIIIII J WITNESSES A. ZAIAUSKIS.

TREE FELLING SAW.

APPLICATION FILED MAYH. 1921.

Patented Apr. 25, 1922.

2 SHEETS-SHEET 2.

Anthon Zaz'ausk'zls .NVENTQR WITNESSES -Cleveland, in the county of UNITED STATES PATENT orrica.

ANTHONY ZAILUSKIS, 0F CLEVELAND, OHIO.

mmrmme saw.

Specification of Letters latent.

Application filed Hay-14,1921. serial No. 488,518.

To allwhom itmay concern:

Be it known that I, ANrHoNr'ZAIAUsKIs', a citizen of the United States residing at Ciuyahoga and State of Ohio, have invented new and useful Im rovements in Tree-Felling Saws, of which the following is a specification.

This invention relates to sawing devices, particularly to devices for felling trees, and has for its object the rovision of a power driven horizontally isposed rotary v saw adapted for cutting down trees, the device including a power driven feed whereby the Figure 56 the like. In carrying out my invention I .made sufficiently saw may be fed along as the cutting progresses.

An important object is the provision of a device of this character, having a ear drive provided with clutch mechanism w ereby the feed may be operated to advance the saw or retract it from a-cut, an automatic control being furthermore provided for throwing out the clutch when the cut is completed or nearly so. 7

Another object is the provision of a device of this character which is provided with a spring-pressed pusher engaglng against the tree being cut, this pusher o eratm the fall of the trfee when t e cut ar. y object is the provision of a has been An additiona device of this character which will be'com-' .provement' in the art.

With the'above and other objects and advantagesin'view, the invention consists in the details of. construction to be heremafte'r' more fullyvdescribed and claimed and illustrated in which I Figure 1 is a side elevation of my device disposed in operative position-and in the act of cutting down a tree,

Figure 2 is a cross sectional view through the tree'showing my device in plan, Figure 3 is a longitudinal sectional mew. through my device,

4 is across sectional view, F1 e 5 is an enlarged horizontal sectionagl iewtaken through the clutch mechanism and. adjacent parts,

Referring more particularly to the drawings, the letter A designates a tree to be cut down and B designates a tank, tractor or q to start the accom an drawings in. D p ymg a shaft portion 30 journaled through the supprovide a supporting frame 10 of referred or suitable construction and which is carried by the tank or tractor, being secured thereto by any desiredv means. The letter a C designates the engine which might be the engine of the tank or tractor or which mi ht, if preferred, bea separate engine. he numeral 11 designates a drive shaft mounted upon the frame 10 and driven by the engine shaft D. Formed or secured ata point spaced from one end of this platform or frame, is an upstanding support 12 and the upper face of the platform is provided between said support and the adjacent end with a guide 13.

Mounted upon the y of the guide 13, is

V Patented Apr. 25.192 2. I 7

a movable supporting member designated broadly by the numeral 14' and including a lower arml5, an intermediate arm 16, an upper arm 17, and a vertical portion 18 from which all the arms extend. Journaled "through the outer ends of the arms 15 and 16 is a vertically disposed arbor 19 carrying a circular saw 20 and also carrying a bevel gear 21 between the arms 15 and 16.

Meshing with the gear21 is a bevel gear 22 on a shaft 23 journaled through abearing24 onthe underside of the arm 16 andalso 'ournaled through the vertical portion 18.

etween the stationary sup rt 12 and the movable su port 14, the s aft 11 carries gears 25 and 26 connected by a hub portion 27. The shaft 23 is telescoplcally supported in the shaft 11.

Above the arm 16 the verticaljportion 18 is provided with an opening within which is secured a 'nut member 28 through which is threaded a screw 29 which terminates. in a port 12. Theshaftll from the motor or Secured upon the shaft 30 is a ur gear 31 which carries a clutch face 32. lso secured upon the shaft 30 adjacent the screw-thread- 0 portion 29 thereof, is a spur gear 33 hav-v ing a clutch face 34. The gear 33 meshes with the gear 25 and the gear 31 meshes withan intermediate gear 35 which is rotatable on the stub shaft 36 and which isin mesh with the gear 26..

.' Extending from the sup ort 12 is a bracket 37 u on which is pivote a forked arm 38 whic en a grooved collar 39' which has engine is operatively connected with this shaft 30 whereby to effect driving thereof.

clutch faces 40 and 41 adapted for engagement with the clutch faces '32 and 34, re spectively.

The gears 31 and 33 are of course loose upon the shaft 30 while the clutch member or grooved collar 39 is splined thereon. The upper end of the forked lever is prolol'iged upwardly, as shown at 42, and is provided with a handle 43 whereby the grooved collar may be shifted to lock either the gear 33 or the gear 31 for rotation with the collar.

slidable through the upper portion of the vertical supporting member 18 is plunger rod 44 having an enlarged free end 45 adapted to be engaged by the frame 14 for thro-w ing the clutch mechanism into neutral position when a sufficiently deep out has been made in the tree. The uppermost arms 17 are formed with openings through which are slidable lungers 46 having'a cross head 47. These pliingers 46 are surrounded by coil springs 49 which hold the plungers in extended position and in engagement with the tree being cut. a

The operation of the device is as follows:

The tractor or tank carrying my device must of course first be driven to a location against the tree to be felled, the proper posi tion being that at which the saw 20 will actually or at least nearly engage the tree to be cut when the movable support 14 is at the limit of its movement toward the stationary support 12. Assuming that the engine is operating and that the shaft 11 is rotating, the'operator pushes upon the handle 43 and this will rock the forked arm so as to bring the clutch face 41 into engage ment with the clutch face 34. The shaft 30 and screw 29 of course rotating, it is apparent that the movable support 14 will be moved toward the tree. As the rotation of the gear 25 will cause a slow rotation of the gear 33, and shaft 23 by virtue of the bevel gears 21 and 22 will operate the saw. As the saw rotates and cuts through the tree the member 14 carrying the-saw will be correspondingly movedas to feed the saw to the tree. The spring pressed plunger 46 operates to effect-pressure agalnst the tree above the saw so that when a sufiiciently deep out has been made the spring-pressed plunger will operate to start falling of the tree. At this time the operator should of course move the handle 43 in the opposite direction to throw the sliding collar into such position that the clutch face 40 thereof will engage the clutch face 32. The gear 31 will then be rotated and this through the instrumentality of the intermediate gear 35 will cause rotation of the gear 26 and shaft 23 in the reverse direction and this will of course result in withdrawal of the movable carriage 14 away from the tree. As a matter of fact when the cut is practically made the head 45 of the plunger 44 will, be engaged by 18 the engine is still running and the'operator desires to render the sawing mechanism inoperative, it is of course merely necessary that the-clutch sleeve 39 be moved to its neutral position, as will be obvious.

From the foregoing description and a study of the drawings it will be apparent that I have thus provided a simply constructed and easily controlled and operated sawing device which will be highly eflioient for use primarily in felling trees, though it is conceivable that it might be used for different purposes and under different conditions.

\Vhile I have shown and described the preferred embodiment of my invention, it is of course to be understood that I reserve the right to make such changes in the form, construction, and arrangement of parts as will not depart from the spirit of the invention or the scope of the subjoined claims.

Having thus described my, invention, I claim: 1

1. A device of the character described comprising a supporting platform having an upright support thereon, a movable support slidable along said platform, a vertically disposed arbOr journale'd in'said movable support, a circular saw on said arbor, means for driving said saw, means for feeding the saw, clutch mechanism interposed between said feed andsaid drive means, and a pull rod engaged by said movable support at the end of its desired travel whereby to shift the clutch means into neutral position. v

2. A sawing device comprising a platform having a stationary support thereon, a movable support slldable along the platf0rm,a

vertical arbor journaled insaid movable support, a horizontally disposed circular saw carried by said arbor, means for driving said arbor, a rotary feed screw j ournaled through said stationary support through the movable support whereby to efand threaded feet longitudinal movement of the latter,

and a spring-pressed plunger carried by the upper portion of the movable support and normally engaging a tree being cut wlereby to exert pressure on the tree above the cut.

3. A device of the character described comprising a supporting platform having a stationary support thereon, a movable support slidable longitudinally along one end portion of the platform, a vertically dis first named shaft and terminating in a feed screw portion threaded through the movable support. a gear loose upon said second named shaft and meshing with one of said first named gears, a second gear loose u on said second named shaft, an intermedlate gear engaging the other of said first named gears and said last named gear, clutch elements on the confronting faces of said loose 10 gears, including a grooved collar splined 'upon the second named shaft and having its elements, a forked lifting lever pivoted upon the stationary support and engaging said grooved collar,and an operative connection between said arbor and said first named shaft.

In testimony whereof I aflix m si ature.

ANTHONY ZAI U KIS. 

